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(Article of periodic en Anglais - 2008)

Document title

Small scale digital soil mapping in Southeastern Kenya

Authors(s) and Affiliation(s)

MORA-VALLEJO A. (1) ; CLAESSENS L. (1 2) ; STOORVOGEL J. (1) ; HEUVELINK G.B.M. (1) ;
(1) Land Dynamics Group, Univ., Wageningen, PAYS-BAS
(2) International Potato Center, Nairobi, KENYA

Abstract

The AA. applied digital soil mapping in a study area in Kenya with the main aim to create a reconnaissance soil map to assess clay and soil organic carbon contents in terraced maize fields. Soil spatial variability prediction was based on environmental correlation using the concepts of the soil forming factors equation. During field work, 95 composite soil samples were collected. Auxiliary spatially exhaustive data provided insight on the spatial variation of climate, land cover, topography and parent material. The final digital soil maps were elaborated using regression kriging. The variance explained by the regression kriging models was estimated as 13% and 37% for soil organic carbon and clay respectively. These results were confirmed by cross-validation and provide a significant improvement compared to the existing soil survey

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2008, vol. 76, no1 [pp. 44-53]

Bibliographic references : 42 ref.

Collation : 7 fig., 9 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2008.09.008

Prodig - Bibliographie Géographique Internationale (BGI)
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